I just used an online calculator. It said something like 1500 kcal a day for my activity level to maintain weight.
I don’t really count calories, but I do look to get a general idea of what a meal or a snack is. Sometimes I’m way over, sometimes I’m way under, it’s all about balance and being in the ballpark.
I find the premade mixes from Birdseye (sold basically everywhere that has frozen food) to be a pretty good lazy way to get a big meal. Usually a decent mix of meat, veggies, and grain, but the whole bag (3 servings) is only like 600-900 kcal. Sometimes it feels like an obscene amount of food for the calorie count.
Not bad for what’s basically a microwave dinner.